happens when very small grant is provided and the status
PDU generation fails because of a too small grant
add extra check to prevent that ACK_SN is also in NACKS list
* Calling tx_end() from radio_reset() causes long execution time in B210. Using boolean to call later instead. Fixes RLF failing in B210. Checked in X300
* Fix issue #655
this allows to close and currently running log process, flush the content
to the file, continue logging during that time, open a new file
and write the new log entries to that new file
basically it allows to use the logger_file multiple times without
needing to destroy the object
this is used in the UE tester to write each testcase into a separate
log file
This commit introduces CSFB (circuit switched fall-back) capabilities to
srsLTE. Actually, all the eNB has to do is to send a
RrcConnectionRelease with the RedirectedCarrierInfo IE.
The MME triggers this by the S1AP CS Fallback Indicator IE, which may
be present either in the Initial Context Setup Requst or in the
UE Context Modification Request.
As srsLTE has no support for the UE Context Modification Request at all
yet (!), basic support for this message is introduced in this patch.
Both Mobile Originated and Mobile Terminated CSFB with a coupel of
different UE models have been verified using this patch in a setup
consisting of srsENB attached to an undisclosed EPC connected via SGsAP
to a complete Osmocom 2G network.
Closes: #358Closes: #363
RRC-PHY interface refactor. Moved RRC-MAC interface to rrc_asn1_utils and created RRC-PHY interface also in rrc_asn1_utils. All ASN1 includes should be made from rrc_asn1_utils only keeping ue_interfaces clean of ASN1
Tested with different common and dedicated configurations (64QAM UL, 256QAM, CA, SRS enabled/disabled, etc)
* first step towards moving MAC timers to stack. Mac is still using its own timers. srslte::timers class can be restructured.
* moved timers out of the UE MAC
- Moved most the initialization of the pdcp_entity to the header.
- Initilize some variables in gtpu_ntoa.
- Removed debug print.
- Format eNB GTP-u debugging code.
this fixes the issue when the stack is torn down if, for example,
the radio couldn't be loaded correctly. it will hence call stop() on all stack
components which are not initialzized yet, and logging therefore doesn't work.
the log object is know during contruction time and therefore can be passed
in as soon as possible.
- all RLC entities are now initialized during contruction
- there is no need to check for, e.g., existance of timers, during
runtime
- there is also no need to call re-init during resume
- timers are freed in dtor
- add interface to RRC to allow NAS to query the DRB for a given
EPS bearer id
- extend interface for NAS to setup GW to also pass LCID of bearer
- in NAS, use this new interface to pass actual LCID of the default
DRB when creating the TUN device
this will also extend all classes that use srslte::thread
to specify the name of the thread in the ctor as well
as to set the name of the worker threads in the thread pool
the thread name will be displayed in gdb.
- abstract UE object now consists of a radio, a PHY, and a stack layer
- add new stack abstraction layer that combines MAC, RLC, RRC, PDCP, NAS and GW
- PHY layer now has a single stack interface and does not talk to MAC and RRC seperatly
- implements a cross-correlation that takes the complex conjugate
of one of the input signals (filter)
- the fft of this input signal is only computed once
This entails:
* Adding S1AP paging messaging to the MME.
* Adding the Downlink Data Notification, Donlink Data Notification Acknoledgment, and Downlink Data Notification Failure Messages.
* Adding the logic at the GTP-U to detect that Downlink Data notification needs to be sent.
* Proper handling of the new GTP-C messages at the MME GTPC and SPGW GTPC classes
* Add queuing mechanisms at the GTP-U while waiting for paging response. Queue is flushed when paging fails (timeout or other).
* Make sure eNB's SCTP information is properly stored.
* Make sure UE's GUTI information is properly stored.
* Adding timer creation at NAS using timerfd_create
* Adding the ability to add and remove the timer file descriptor to the MME main select loop
* Adding the ability to the MME for the NAS to check if a timer is running
* Adding the timer expiry handling functionality at the MME
this patch allows to configure the EIA and EEA algorithms
the UE uses and announces during attach. They can
be specified as a comma-separated list.
The patch also removes a dedicated NAS config class and uses
the default nas_args_t type for this. There was a full
duplication of members before.
The patch also converts nas_args_t and usim_args_t into a class
with a default constructor that initialize all booleans.
write_sdu and write_pdu are not re-entrant because all functions
that deal with the counters, e.g. integrity check and generate,
must be protected because MAC threads may call them at the same time.
this addresses issue #254
* Starting to add M2AP serialization structures.
* Added M2AP procedure ids.
* Added some M2AP max values.
* Removing m2ap.cc for now.
* Adding cause IE.
* Adding dummy m2ap.cc to check correct compilation of m2ap.h
* Fixed compilation issues in m2ap.h
* Adding Cell Information IE.
* Added Criticality diagnostics IE.
* Adding eNB-MBMS-ConfigurationDataItem.
* Adding MBMS-Service-Area-Id-List
* Added MBMS Service Area Id.
* Added Global eNB Id IE.
* Added Global MCE id IE.
* Added MBMS-Service-associatedLogicalM2-ConnectionItem IE.
* Added MBSFN_SUBFRAME_CONFIGURATION IE
* Added MCCHrelatedBCCH-ConfigPerMBSFNArea IE.
* Added MCH scheduling period IE.
* Added PMCH-Configuration IE.
* Added Time-to-Wait IE.
* Added TNL-Information IE.
* Starting to add M2SetupRequest msg.
* Adding M2 Setup Request message.
* Fixed up enums related to initiating messages, successful outcome and unscesseful outcome.
* Starting to add m2ap apck/unpack PDU functions.
* Started to add a test for M2 Setup Request Pack/Unpack.
* Filling in M2SetupRequest structure.
* Adding packing of more IEs in the M2SetupRequest.
* Starting to add unpacking functions to M2SetupRequest.
* Continuing to unpack M2SetupRequest. Unpacking PLMN Identity correctly now.
* Fixed up enb_id unpacking. eNB Id and eNB name unpacking correctly now.
* Starting to add unpacking for dataconfiguration item.
* Adding support for eCGI unpacking.
* Adding MBSFN Synchronization Area id Unpacking.
* Adding service area unpacking.
* Added unpacking functionality to the rest of the IEs in the M2 Setup Request. Unpacking the M2 Setup Request is passing unit test.
* Fized mistake in packing eNB Id. Starting to add packing to eCGI.
* Starting to pack value in ENB MBMS Configuration item.
* Fixed packing of ENB MBMS configuration item header.
* Packing of M2 Setup request is now passing the unit test.
* Starting to add M2setup response.
* Starting to add packing/unpacking succeful outcome.
* Starting to add M2SetupResponse to test.
* Continue to add testing to setup response. Choice type seems OK.
* Starting to add unpacking to MCE Id.
* Adding MCEname packing/unpacking.
* Continue to unpack m2setupresponse.
* Adding MBMS Area Id unpacking
* Added pddch length unpacking.
* Adding more IE unpacking.
* Adding more code to unpack M2 Setup response.
* Added M2 Setup response unpacking.
* Added M2 response packing. Fixed mistake on eCGI packing/unpacking, which broke M2 Setup request.
* M2 setup request and response pack and unpacking seems to work.
* Starting to add MBMS Session Start Request.
* Continue to unpack MBMS session start request.
* Added TMGI unpacking.
* Continue to add unpacking to MBMS session start request
* Starting to add TNL Information unpacking
* Added unpack for MBMS session start request.
* Strating to add MBMS session start request packing.
* Adding MCE MBMS M2AP Id packing.
* Added MBMS Session Start Reqeust pack and unpack.
* Added MBMS Session start response packing/unpacking.
* Starting to add unpacking of MBMS Scheduling information.
* Adding MCCH Update time Unpacking.
* Adding MBSFN Area Configuration List Unpacking.
* Starting to add unpack PMCH configuration Item.
* Adding AllocatedSubframesEnd unpack
* Fixed multiple mistakes in unpacking PMCH configuration.
* Unpacking MCH Scheduling Period
* Continue to unpack MBMS Session List Per PMCH Item.
* Added unpacking of PMCH Configuration List. Starting to add unpacking of MBSFN Subframe Configuration List.
* Adding radioframe allocation period and offset unpacking.
* Added unpacking of MBMS Scheduling Information (needs testing.)
* Added more testing to MBMS Scheduling Info.
* Small commit.
* Added more testing to the unpacking of MBMS Scheduling Information. Unpacking correctly now.
* Continue to pack MBMS Scheduling information. Packing PMCH Configuration.
* Fixed mistach in packing PMCH configuration list.
* Adding more packing to MBMS scheduling info message.
* Fixed more mistakes in MBMS Scheduling information packing. Passing tests now.
* Added MBMS Scheduling Information Response.
* Remove debug prints.
- add a simple and low-overhead has_data() method to check whether
an RLC entity has data to transmit or not
- use this method for all calls that are actually not interested
in the amount of data to send
- use the more expensive get_buffer_state() for all cases where
the actual size of the buffer is of importance